<span>Zambia has large copper resources and is one of the world's largest exporters of copper. However, it is very dependent on this resource, and when the price of copper goes down, the economy suffers.</span>
Answer:
Ferrel Cell.
Explanation:
Ferrel cell is the circulating air that occurs between 30° and 60° or S of the equator. From 30° latitude to 60° latitude, a new cell is present which is known as the Ferrel Cell. This Ferrel cell produces prevailing westerly winds at the surface on these latitudes. Ferrel cell is a model for the wind circulation of mid-latitude segment of Earth which was proposed by William Ferrel in 1856.
Layer D is the oldest because it is the deepest.
